Figure 13.7Circuit diagram of a three-speed control system
Figure 13.8 Blower motor and fan
Figure 13.9 An electronically controlled vehicle-heating system
at this stage will help to lead into the more complex systems. Figure 13.9
shows a block diagram representing an electronically controlled vehicle-
heating system.
This system requires control of the blower motor, blend ap, direction aps
and the fresh or recirculated air ap. The technique involves one or a number
of temperature sensors suitably positioned in the vehicle interior to provide
information for the ECU. The ECU responds to information ...
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